When ATVs first came out they were three-wheelers! Talk about instability!
Well the modern definition of ATV is different from the 1st ones to come on the market and this;
, would be one of the first, was a track unit. The developer, Norbert Arnold of Pengilly MN closed because of legal action from roll over's. That unit would literally climb a tree!
I have one of these and the thing is never used to play with. I keep the blade on it for safety and it is also my parking brake.